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World War II lasted four years due to the scale and complexity of the conflict, which involved multiple nations and theaters of war across Europe, Asia, and the Pacific. Key factors included the initial successes of Axis powers, the eventual mobilization and coordination of Allied forces, and the strategic decisions made by military leaders. The war also saw significant battles and turning points, such as Stalingrad and D-Day, which prolonged the conflict. Ultimately, it took time for the Allies to defeat the entrenched Axis powers and bring about unconditional surrender.

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AnswerBot

1mo ago

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